Loom having means for severing tuft forming strands



ay 1952 J- K. MCCUTCHEN ETAL 2,598,579

LOOM HAVING MEANS FOR SEVERING TUFT FORMING- STRANDS Filed July 28, 1950 3 Sheets-Sheet l INVENTORS. JOSEPH K. Mc CUTCHEN 1 DANIEL A.TH MAN.

ATTORNEY y 27, 1952' J. K. MOCUTCHEN EIAL 2,598,579

LOOM HAVING MEANS FOR SEVERING TUFT FORMING STRANDS Filed July 28, 1950 s Sheets-Sheet 2 8 2 3 3 3 8 v 3 1 al a a 6 III III u H... Ill III n-iw gar/Ana"? /fll.

7 IIIIIIII INVENTORS, JOSEPH K. MCCUTCHEN y & DANIEL A. TlLLM XN ATTORNEY y 1952 J- K. MCCUTCHEN ET AL 2,598,579

LOOM HAVING MEANS FOR SEVERING TUFT FORMING STRANDS Filed July 28, 1950 3 Sheets-Sheet 3 O 72 INVENTORS. 7o 7 27 JOSEPH K.Mc CUTCHEN By DANIEL Affiu. MAN

ATTORNEY Patented May 27, 1952 LOOM HAVING MEANS FOR SEVERING TUFT FORMING STRANDS Joe K. McCutchen, Ellijay, and David A. Tillman, Cartersville, Ga.

Application July 28, 1950, Serial N 0. 176,301 is Claims. (01. 139-291) particular reference to means for severing tuftforming strands or threads which are woven in the fabric for producing lines of tufting.

An important object of the invention is to provide means which will sever the floating strands while the loom is in operation, at the longitudi nal center of the strands for producin an even or uniform line of tufting.

A further object of the invention is to provide a presser foot which will hold the fabric fiat at the time that the prongs pass beneath the floating strands.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this application, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a plan view of apparatus embodying invention, showing the same applied to a loom,

Figure 2 is a side elevation of a presser foot, removed,

Figure 3 is a plan view of the presser foot, the vertical arm being shown in section,

Figure 4 is a longitudinal section taken on line 4-4 of Figure 3,

Figure 5 is a similar view taken on line 5-5 of Figure 3,

Figure 6 is a transverse section taken on line 5-6 of Figure 3,

Figure 6a is a similar view taken on line (Ea-5a of Figure 3,

Figure 7 is a plan view of the carriage and associated elements.

Figure 8 is a side elevation of the same,

Figure 9 is an end elevation of the same, associated elements being shown in section.

Figure 10 is a vertical section, taken on line l0-l 0 of Figure 8,

Figure 11 is a central vertical section through the coupling element for securing the chain to the carriage,

Figure 12 is a diagrammatic view of the loom and strand-severing means,

Figure 13 is a diagrammatic view of the fabric and presser foot.

Figure 14 is a longitudinal section through the fabric, and

Figure 15 is an enlarged vertical longitudinal section through one prong, passing beneath the floating portions and showing the severing action.

In Figures 1 and 12, the numeral designates the breast beam of the loom. Arranged beneath 2 the breast beam in the sand roller 2| and 22 is a pick-up roller. The numeral 23 designates the lay and 24 are the heddles which form the shed. Numeral 25 is the warp beam and 26 i a guide roll. This is the conventional loom. The numeral 21 is a fabric being woven.

The means which severs the tuft-forming strands comprises horizontal guide means or track rails 28, extending transversely of the loom, near and spaced from the breast beam 20, and arranged at an elevation above the breast beam. These track rails are supported at their ends upon the loom sides by uprights 29. These track rails may be in the form of L irons.

, Mounted to travel upon the track rails 28 is a reciprocatory carriage 30, embodying a vertical plate 3|, having upper horizontal axles 32 rigidly secured thereto, adjacent to it top and opposite ends. The axles 32 carry wheels 33, rotatable thereon, travelling upon the track rails 28. Lower transverse axles 34 are rigidly secured to the vertical plate 3|, and correspond in number and arrangement to the axles 32 and carry rotatable wheels 35. The wheels 35 are in vertical alignment with the wheels 33 and are arranged beneath the horizontal webs of the track rails 28 and are spaced therefrom The function of the wheels 35 is to prevent undue vertical movement of the carriage with respect to the track rails 28. A horizontal guide rail 36 is provided to engage the ends of two of the wheels 33, and the guide rail is mounted upon the top of one track rail 28, and is adjustably secured to brackets 31 by bolts 38. The brackets are secured to the track rail 28, as shown. Arranged near the right end of the track, Figure 1, which is the starting or idlin 'position of the carriage, Figure 1, is the leaf spring 39, mounted upon and attached to one track rail 28 and adapted to receive one wheel 33 between it and the track rail, when the carriage is shifted to the starting or idling position, thereby securely detachably holding the carriage in the starting or idling position.

In order that the carriage and the severing means to be described will keep up with the travel of the fabric as it is being woven, the track rails 28 and the guide rail 36 are inclined slightly in a horizontal plane, their left ends being slightly in advance of their right ends and these right ends are at the starting or idling position of the carriage. The inclination will vary depending upon the speed of operation of the loom and the speed of travel of the carriage. The carriage must be shifted laterally in a forward direction to keep up with the travel of the 3 fabric as it is bein woven, so that the cutters will sever the floating portions at the longitudinal centers of such floating portions.

The vertical plate 3! of the carriage depends ing a tubular hub 45. The tubular hub {i6 fits within the tubular hub 43 and is rigidly secured thereto by means of a press fit or th like. Ball bearings 41 are arranged within the telescoping tubular hubs and are mounted upon a horizontal shaft 48, rigidly secured to the bracketflil A lower horizontal shaft '49 is rigidly secured to the lower end of the vertical plate 3 l ,and carries ball bearings 58, the outer races of which have a press fit within a sleeve which is accordingly rotatable upon the shaft. 9. Thislsilev ism-c7 videdatits end adjacenttoth' vertical plate 3!,

with a; radial flang i'i, to engage with asymmdrical rotary cutter 53, havinga'cent'ral opening to receive the sleeve. A second cylindrical rotary cutter 5,4 is provided having acntral ope to receive the sleeve 51 and a spacer 55 is arranged between the rotary cutters. The pin separate are attachedto th flange 52 and passthroiigh openings in the rotary cutters 53 and 54.. all clamp ring 5firhas screw threaded engagement uponthe sleeve 5| and is adapted to be screwed 7 up into engagement with, the adjacent rotarycutterEfl; r a yneiq ary cutters to the spacer 55 and the cutter-Q53 to the flange 52. A small g gear rigidly secured mane end of the sleeve 5| by means of a press fitth'erein orb'y any other suitable means. The gear 57 isrotatable upon the -shaft and is rigidly secured to the sleeve was small e -t vArranged s;1.diacent to the lower. edge of the rotary, cutters 53 and 54,. is a horizonal pressefoot 53 rigidly secured tothe vertical 59,

secured to a depending portiontil of 'a plate 3! by bolts 6|, passingthroughslots 62. The arm 53 may therefore beiverti'cally adjusted and clamped totheflepending extension the selected adjustedposition. Thepresser foot 58 is horizontal andincludes a body portion 58' which carries lat erallyspacedhorizontalfingers Stand 63 integrai therewith. Tl e flng er's G3 and 63. are providedat their forward ends with lower rounded or inclined portions 5 Thefingers 63 and 63' ges the large gearrt.

per faces 10' of the'prongs at their forward ends are curved in cross section and are convex and are also vertically inclined longitudinally, extending upwardly in a rearward direction. The prongs are provided at their rear ends with upper longitudinal grooves 72, which also extend into the plate 88. These grooves have their bottoms cirbearing 19, carried by a horizontal arm 85! mount:-

ed upon a suitably supported gear box iii. The shaft 78 is driven by gears within the gear box, or it may be driven'hyjother means; The sprocket "wheel d5 engages the lower runof the sprocket chain 53.. fl'rheupperrun of the sprocket chain is attached to the vertical plate 3!, and this is elfe'cted hy passing the upper run through a horizontal sleeve 82, rigidly secured to the vertical plate 35. The horizontal sleevecarries a vertical sleeve 63 and a, plug 8% is mounted within the sleeve 33, Figure 1l,:for locking engagement with the .link' 'of the chain'ifi i'he plug 84 is moved downwardly by a spring 85 engaged by an upper plug 86, screw threaded within the vertical sleeve '83...v

The fabric 27 is woven With'the warp 21 and the filling 21 in the usual manner; and 27 are relatively largelongitudmally extending strands which a'r'ewoyen into thejbase of the fabric. The strands 2l produce floating portions Zl which are severed at their longitudinal centers, producmar a space, orrecss,.65, and the presser foot Es -has an inclined grounded face 681, at the rear e'nd of the recess fi. The lower face163a of the fingen 63; is at an elevation slightlyabov'ethe lower facefit of the finger 63', Figure .6. The

finger travels over the unsevered floating por- 214, while the :63 travels over the severed floatingportions, and shifts the severed floating portions out cr sps-a1 of travel and hence the finger 53 travels close to the fabric base. The body portion 53' of the presser foot 4 5; is provided upon its bottornwith a recess 6?,

receiving a horizontal plate 68, secured. to the presser foot 513 by screws 69or the like. The plate 68 has a pair of spaced horizontal prongs 123, formed integral therewith. The bottom edges H of -these prongs is at an elevation beneath the bottom face of the plate 68 and the bottom faces 63? and 633 of the fingers. The bottom faces H are flat, as shown. The prongs 10 are positioned within the recess and are equidis'tantly spaced from each other and from the arms 63. Th uparefslightly laterally .jsliacfed, and these floating portions are arranged in'tra'nsverse rows inwardly of the selvage edges 2l of the fabric.

In the operation of the loom, the carriage 30 is held stationary at the right or idling end of the tracks 28, during the weaving period. When the next pair of rows of floating portions arebrought to theposition to be severed, the leading finger i3 is inalignment with the last row of severed floating portions 21", while the trailingrfinger is in alignment with the unsevered row of floating portions zl 'n'ext rearwardly of such pairs of rows of unsevered floating portions. The prongs 10 are in alignment with the leading pair of unsevered floating portions, .21f The arms 63 and 63' and the prongs Hi remain upon the 'selvage 21? when in the idling orstartin'g position. When the leading pair of row's of unsevered floating portions 21 move to the severing position, as stated, the c arriagefifl is moved forwardly for. the width of ths fabrics The fingers 63 and 63' first travel over the fabric, in advance of the prongs, the

s eh floating portions areraised and ont nue'd 'travel of the carriage gs; thes floating portions into engagement with' the rotary cutters 53 and 54 which sever the weaving period until the next two rows of floating portions are brought to the severing position in alignment with the prongs 10, at which time the operation is repeated. The present invention is not concerned with the precise means to move the carriage in opposite direction,

from the starting or dwelling position and return the same to this position, and any suitable means may be employed to operate the endless sprocket chain 13 for this purpose. We may employ the means shown in the pending application of J. K. McCutchen et al., S. N. 71,898, filed January 21, 1949, for severing Machine for Looms. The present application is a continuation in part of our copending application S. N. 71,898, filed J anuary 21, 1949.

It is to be understood that the form of this invention herewith shown and described is to be taken as a preferred example of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described our invention, what we claim is:

1. In a loom for weaving floating portions in a fabric, a sand roll about which the woven fabric passes, guide means mounted upon the loom near the sand roll, a carriage to travel upon the guide means, means to reciprocate the carriage, and a presser foot mounted upon the carriage to travel over the fabric, said presser foot including a pair of substantially horizontal fingers and a pair of spaced substantially horizontal prongs arranged between the fingers and extending longitudinally of the same, said prongs extending downwardly below the fingers and having their forward ends terminating short of the forward ends of the fingers, and cutting means mounted upon the carriage and coacting with the prongs to sever floating portions there- 2. In a loom for weaving floating portions in a fabric, a sand roll about which the woven fabric passes, guide means .mounted upon the loom near the sand roll, a carriage to travel upon the guide means, means to reciprocate the carriage, a presser foot mounted upon the carriage to travel over the fabric and including a body portion, a pair of substantailly horizontal fingers mounted upon the body portion and laterally spaced to form a recess between them, a pair of substantially horizontalprongs mounted upon the body portion and arranged within the recess and spaced from each other and from the fingers, said prongs extending downwardly below the fingers, the fingers extending forwardly beyond the prongs, said prongs being provided at their tops with longitudinal grooves, rotary cutters mounted upon the carriage and operating within the grooves to sever the floating portions upon the prongs, and means to drive the cutters.

3. In a loom for weaving floating portions in a fabric, a sand roll about which the woven fabric passes, guide means mounted upon the loom near the sand roll, a carriage to travel upon the ,guide means, means to reciprocate the carriage, a presser foot mounted upon the carriage to travel'over the fabric and including a body portion, substantially horizontal fingers mounted uponthe body portion and laterally spaced to form a recess between them, substantially horizontal prongs mounted upon the body portion and arranged within the recess and spaced from each other and from the fingers, said prongs'extending downwardly below the fingers, the fingers extending forwardly beyond the prongs, said prongs having upper faces which are longitudinally inclined and extendingupwardly toward the body portion, the upper faces having longitudinal grooves, rotary cutters mounted upon the carriage and operating near the grooves to sever the floating portions upon the prongs, and means to drive the cutters.

4. In a loom for weaving floating portions in a fabric, a sand roll about which the woven fabric passes, guide means mounted upon the loom near the sand roll, a carriage to travel upon the guide means, means to reciprocate the carriage, a presser foot mounted upon the carriage to travel over the fabric and including a body portion, a pair of substantially horizontal fingers mounted upon the body portion and laterally spaced to form a recess between them, a substantially horizontal prong mounted upon the body portion and arranged within the recess and spaced from the fingers, said prong extending downwardly below the fingers, the fingers extending forwardly beyond the prong, said prong having an upper longitudinally inclined face extending upwardly toward the body portion and provided with a longitudinal groove, a rotary cutter mounted upon the carriage and operating near the longitudinal groove to sever the floating portions upon the prong, and means to drive the rotary cutter.

5. In a loom for weaving floating portions in a fabric, a sand roll, a carriage to travel transversely of the fabric being woven and passed about the sand roll, inclined guide means for the carriage to shift the same laterally to keep up with the feed of the fabric as it is woven, a presser foot mounted upon the carriage to travel over the fabric and including substantially horizontal fingers which are spaced to form a passage between them, a substantially horizontal prong arranged between the fingers to enter floating portions upon the fabric, and cutting means mounted upon the carriage to sever the floating portions upon the prong.

6. Means to sever rows of floating portions woven in a fabric upon a loom, said means comprising a presser foot including a body portion, substantially horizontal fingers carried by the body portion and spaced to form a recess between them, a substantially horizontal prong arranged within the recess and secured to the body portion, a power-driven cutter to sever the floating portions upon the prong, and means to move the cutter and presser foot transversely of the fabric.

7. A presser foot to be moved over a fabric having floating portions upon its upper face, said presser foot including a body portion, spaced substantially horizontal fingers carried by the body portion, a substantially horizontal prong mounted upon the body portion between the fingers, the prong having an upper longitudinally inclined face extending upwardly toward the body portion, the upper face having a longitudinal groove and a cutting element operating within the groove.

7 lower face between the fingers and, secured to the body portion.

7 9. A pr'e'sser foot to be moved over a woven fabric having rows of floating portions upon its uep'erirac'e, said presser foot including a body portion, spaced substantially horizontal fingers secured to the bodypo'rtioh, spaced substantially horizontalprongs secured to the body po'rtion and arran'gedibetiveen the fingers, the prongs extending downwardly below the fingers and the fingers extending forwardly beyond the prongs, the prongs extending beneath the, floating portions, and means to sever the floating portions when. said floating portions are arranged upon the prongs; 1

10 -A presser foot to be moved over a woven fabric having rows of floating portions upon its upper face,- said presser foot including a body por- ,tion, a pair of Substantially horizontal fingers carried by the body portion and spaced to provide a ieces's between them; one finger having its disposed at a slightelevation above the lovver face of the other finger, substantially horizontal prongs secured to the body portion and arranged within the recess, the prongs extending downwardly below the, lower faces of the fingers and the fingers extending forwardlybe yond the prongs.

1. In a loom, a guide elementover eme fabric passes when being woven with tuft tonning strands having floating portions arranged in transverse rows, a track extending longitudinally of the guide element, a carriage to travel upon the track'and guided by the track longitudinally of each transverse row of floating portions in succession to be severed and shifted laterally by such track during its longitudinal movement,

a power operated cutter mounted upon the carriageand movable with relation thereto to sever the floating portions in the row in succession, and

driving means connected With the carriage to shift the same longitudinallyof the track. 1

12. In a loom, a guide element over which the fabric passes when being woven with tuft forming strands having floating portions arranged in transverse rows, a track extending longitudinally of the guide element, a carriage to travel upon the track and guided by the track longitudinally of each transverse row of floating portions in succession to be severedand shifted laterally by su'ehtraek during its longitudinaljmovement, a presser foot inoun'ted'ii'pon thecarriageto engage the top of the fabric to'pa'ss beneath the floating portionsin the transverse 'ro'w, said' presser foot having a part 'to raise the fioating portion, a rotary cutter mounted "upon the carriage and arranged near the raised portion of the presser foot to sever; the floating, portions upon the raised part of the, presseii, foot, means to rotate the cutter, arididri'ving means connected with the carriage to move itloh'gltuflina11y 0f the track While the fabric is beingvvovenr v 7 V Y 13 In a loom, a guide element over which the fabr'm passes whenb'eing woven with tuft formmg s'trai'ids'having' floating portions arranged in transverse rows; a track extending longitudinally of the guide eleiiieiit, a earriage to travel upon the 'tfak tote guided byth'e'track longitudinally of each transverse row of floating portions in siiecessioii'tote severed an shifted laterally by fabric at a point spaced from the guide element, the presserfoot including a longitudinally inolihedralsed portion havinga gr ove; the presser foot being adaptdto pass beneath the floating portions in succession the row, -'a rotary cutter mounted upon the carriage and having. its cuttin edge cperatio'gwithmit eg oove, means to drive the rotary c utter, and dr ving-mea s connected with the carriage 'to move itlongitudinally of the track while the fabric is being Woven.

, JOE K; MCCUTCHEN. DAVID A. TILLMAN.

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Mack j f l Oct, 4, 1949 

